Information processing apparatus control method for external device having both a wired interface and a wireless interface settings

ABSTRACT

An information processing apparatus which makes it easier to carry out setting of a wireless interface necessary for enabling a device or apparatus to be used via the wireless interface, using a wire interface. An information processing apparatus carries out first communication setting so as to enable an apparatus or device to be controlled via a wire interface, communicates with the apparatus or device via the wire interface after the first communication setting to carry out second communication setting for enabling communication with the apparatus or device via a wireless interface. This simplifies the communication setting for enabling communication with the apparatus or device via the wireless interface.

This is a continuation of U.S. patent application Ser. No. 10/869,788filed Jun. 16, 2004.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an information processing apparatuswhich is capable of communicating with devices or apparatuses havingboth a wire interface and a wireless interface, and a control methodtherefor, and a program for implementing the method.

2. Description of the Related Art

In recent years, devices or apparatuses, such as printers and printeradapters, having a wireless interface have been more and more widelyused because networks conventionally constructed using wires or cablescan be changed into wireless ones which need no wiring or the like. Forexample, as devices compliant with the IEEE 802.11b standard forwireless interfaces, there have been proposed wireless LAN access pointsand wireless LAN routers.

A printer connectible to a wireless LAN, as a device with theabove-mentioned wireless interface, needs no wiring or the like, and canbe shared by a plurality of PCs. Therefore, even in homes, for example,it is possible to meet the needs of carrying out printing from aplurality of PCs, using a single printer (refer to e.g. JapaneseLaid-Open Patent Publications No. H07-013891 and No. 2003-050677).

However, when a wireless LAN is used, differently from the case where awire LAN is used, it is difficult to make sure whether a printer isproperly connected to the LAN. For this reason, for example, in settingup a wireless LAN, there is a fear of the setup operation being carriedout and terminated in spite of actual failure in connection.

Further, in the case where printers are shared for use by a plurality ofPCs, a method is employed in which the second and subsequent PCs to beconnected to the printers search the wireless LAN for the printers, anda desired one of the detected printers is selected by a user. However,when a PC cannot properly find a printer via the wireless LAN, or when aplurality of printers are found, the user often has to carry out acomplicated operation, which is liable to cause an erroneous operation.Moreover, in an environment where a plurality of printers of the sametype are connected to the wireless LAN, the user has difficulty infinding a desired printer.

SUMMARY OF THE INVENTION

It is a first object of the present invention to provide an informationprocessing apparatus and a control method therefor, which make it easierto carry out setting of a wireless interface necessary for enabling adevice or apparatus to be used via the wireless interface, using a wireinterface, and a program for implementing the control method.

It is a second object of the present invention to provide an informationprocessing apparatus and a control method therefor, which are capable ofpreventing a user from erroneously using an unintended interface (i.e. asecond interface), by deleting a communication setting for the secondinterface, for example, a port instance corresponding to the secondinterface, when carrying out setting of a first interface necessary forenabling a device or apparatus to be used via the first interface, usingthe second interface, irrespective of whether the first and secondinterfaces are wireless interfaces or wire interfaces, and a program forimplementing the control method.

To attain the above first object, in a first aspect of the presentinvention, there is provided an information processing apparatuscommunicatable with at least one device or apparatus having a wireinterface and a wireless interface, comprising a first communicationsetting-executing device that executes first communication setting forenabling the device or apparatus to be controlled via the wireinterface, and a second communication setting-executing device thatcommunicates with the device or apparatus via the wire interface afterexecution of the first communication setting, to execute secondcommunication setting for enabling the information processing apparatusto communicate with the device or apparatus via the wireless interface.

With the arrangement of the information processing apparatus accordingto the first aspect of the present invention, communication setting forenabling communication with a device or apparatus by using a wirelessinterface can be achieved more easily by using a wire interface.

Preferably, the second communication setting-executing device comprisesa connection checking device that checks, via the wireless interface,whether or not connection of the information processing apparatus to thedevice or apparatus has been established during execution of the secondcommunication setting.

With the arrangement of this preferred embodiment, communication settingis completed only when establishment of connection to the device orapparatus is confirmed by actually checking connection to the wirelessinterface. This makes it possible to avoid the inconvenience that thecommunication setting is completed in spite of actual failure inconnection.

Preferably, the second communication setting-executing device acquirescommunication setting information required to execute the secondcommunication setting, via the wire interface.

Preferably, the second communication setting-executing device transmitsa command for setting communication setting information required toexecute the second communication setting, via the wire interface.

Preferably, the information processing apparatus further comprises ageneration device that is responsive to an instruction from a user forgenerating one or both of an icon corresponding to the firstcommunication setting and an icon corresponding to the secondcommunication setting.

Preferably, the information processing apparatus further comprises aprompting device that prompts a user to confirm whether the secondcommunication setting is to be executed after execution of the firstcommunication setting, and the second communication setting-executingdevice is responsive to confirmation by the user that the secondcommunication setting is to be executed, for starting the secondcommunication setting

Preferably, the information processing apparatus further comprises adeletion device that deletes information set by the first communicationsetting.

To attain the above first object, in a second aspect of the presentinvention, there is provided a method of controlling an informationprocessing apparatus communicatable with at least one device orapparatus having a wire interface and a wireless interface, comprisingan installation step of installing a device driver as software forenabling the device or apparatus to be controlled via the wireinterface, in the information processing apparatus, and a settingprocessing step of communicating with the device or apparatus via thewire interface after installation of the device driver, to executesetting processing for enabling the device or apparatus and theinformation processing apparatus to communicate with each other via thewireless interface.

To attain the above first object, in a third aspect of the presentinvention, there is provided a method of controlling an informationprocessing apparatus communicatable with at least one device orapparatus having a wire interface and a wireless interface, comprisingan installation step of installing a device driver as software forenabling the device or apparatus to be controlled via the wireinterface, in the information processing apparatus, an acquisition stepof causing the information processing apparatus to acquire settinginformation on the wireless interface already set to the device orapparatus, via the wire interface, after installation of the devicedriver, and a setting processing step of executing a wireless interfacesetting process for enabling the device or apparatus and the informationprocessing apparatus to communicate with each other via the wirelessinterface, based on the acquired setting information on the wirelessinterface.

With the arrangement of the method of controlling the informationprocessing apparatus according to the third aspect of the presentinvention, communication setting of a wireless interface to each ofsecond and subsequent information processing apparatus can be performedeasily via a wire interface as in the first information processingapparatus, and therefore it is possible to unify user operations,thereby suppressing erroneous operation in the communication setting.

To attain the above first object, in a fourth aspect of the presentinvention, there is provided a control program for executing a method ofcontrolling an information processing apparatus communicatable with atleast one device or apparatus having a wire interface and a wirelessinterface, comprising a first communication setting-executing module forexecuting first communication setting for enabling the device orapparatus to be controlled via the wire interface, and a secondcommunication setting-executing module for communicating with the deviceor apparatus via the wire interface after execution of the firstcommunication setting, to execute second communication setting forenabling the information processing apparatus to communicate with thedevice or apparatus via the wireless interface.

To attain the above second object, in a fifth aspect of the presentinvention, there is provided an information processing apparatuscommunicatable with at least one device or apparatus having a firstinterface and a second interface, comprising a first communicationsetting-executing device that executes first communication setting forenabling the device or apparatus to be controlled via the firstinterface, a second communication setting-executing device thatcommunicates with the device or apparatus via the first interface afterexecution of the first communication setting, to execute secondcommunication setting for enabling the information processing apparatusto communicate with the device or apparatus via the second interface,and a deletion device that deletes information set by the firstcommunication setting, after execution of the second communicationsetting.

With the arrangement of the information processing apparatus accordingto the fifth aspect of the present invention, irrespective of whether aninterface is a wire one or a wireless one, when setting of a firstinterface necessary for enabling a device or apparatus to be used viathe first interface is carried out by using a second interface,communication setting for the second interface is deleted, whereby it ispossible to prevent a user from erroneously using an unintendedinterface, as well as from being confused due to unnecessary display ofan icon corresponding to the second interface.

Preferably, the information processing apparatus further comprises adisplay device that displays a display screen for prompting a user toconfirm whether the second communication setting is to be executed afterexecution of the first communication setting by the first communicationsetting-executing device.

Preferably, the deletion device deletes an icon corresponding to thefirst communication setting after execution of the second communicationsetting.

To attain the above second object, in a sixth aspect of the presentinvention, there is provided a method of controlling an informationprocessing apparatus communicatable with at least one device orapparatus having a first interface and a second interface, comprising aninstallation step of installing a device driver as software for enablingthe device or apparatus to be controlled via the first interface, in theinformation processing apparatus, a setting processing step ofcommunicating with the device or apparatus via the first interface afterinstallation of the device driver, to execute setting processing forenabling the device or apparatus and the information processingapparatus to communicate with each other, and a deletion step ofdeleting information associated with the device driver after executionof the setting processing in the setting processing step.

The above and other objects, features, and advantages of the inventionwill become more apparent from the following detailed description takenin conjunction with the following drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram schematically showing the arrangement of aninformation processing system including an information processingapparatus according to an embodiment of the present invention;

FIG. 2 is a view showing screens generally displayed in installing aprinter driver using the USB interface;

FIG. 3 is a flowchart showing a general procedure of installation of aprinter driver using the USB interface;

FIG. 4 is a view showing an example of a standard database in an OS;

FIG. 5 is a view showing an example of a printer list screen in the OS;

FIG. 6 is a view showing examples of screens displayed during executionof a printer driver installation process using the USB interface;

FIG. 7 is a flowchart showing the printer driver installation process;

FIGS. 8A to 8C are views showing a first sequence of screens displayedduring execution of a wireless network installation process using theUSB interface;

FIGS. 9D and 9E are views showing screens as a continued part of thesequence of FIGS. 8A to 8C;

FIG. 10 is a view showing a printer list screen displayed when a userselects setup of a wireless LAN port alone;

FIG. 11 is a view showing a printer list screen displayed when the userselects setup of not only the wireless LAN port but also a USB port;

FIG. 12 is a view showing a second sequence of screens displayed duringexecution of another wireless network installation process using the USBinterface;

FIG. 13 is a flowchart showing the other wireless network installationprocess;

FIG. 14 is a view showing examples of screens displayed during executionof a wireless network installation process on a second PC;

FIG. 15 is a flowchart showing the wireless network installation processin FIG. 14 which is executed by PCs;

FIG. 16 is a continued part of the flowchart in FIG. 15; and

FIG. 17 is a view showing a sequence of screens displayed duringexecution of a wireless network installation process using the USBinterface, according to a variation of the present embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention will now be described in detail below withreference to the accompanying drawings showing a preferred embodimentthereof.

FIG. 1 is a block diagram schematically showing the arrangement of aninformation processing system including an information processingapparatus according to an embodiment of the present invention.

A notebook PC (information processing apparatus) appearing in FIG. 1 isadapted to use a USB cable 15 as a wire interface and have a PCMCIAcard-type wireless LAN card 14 mounted therein as a wireless interface.Similarly to the PC 11, a printer 12 is equipped with a wire interfaceand a wireless interface. The connection of the PC 11 and the printer 12by the USB cable 15 provides wire interfacing. The mounting of thePCMCIA card-type wireless LAN cards 14 in the PC 11 and the printer 12provides wireless interfacing. An access point 13 is for wirelessinterfacing, and functions as an intermediate between wireless devicesor apparatuses. A PCMCIA card-type wireless LAN card 14 can be mountedin the access point 13.

Print data can be sent from the PC 11 to the printer 12 using the USBcable 15 as well as via the access point 13 by wireless interface.Although the single PC 11 alone is shown in FIG. 1, a plurality of PCscan be connected to a single access point to share a single printer foruse.

A wireless LAN has a mode which enables connection to a plurality of LANdevices via an access point of the wireless LAN, and the mode is called“the infrastructure mode”. In the infrastructure mode, the same ID(SSID) that is set to the access point is set to the LAN devices,whereby a LAN can be formed by the wireless LAN devices connected viathe access point. When a printer is used in a wireless LAN, it isnecessary to set the printer such that the printer can be connected tothe access point. In the present embodiment, it is assumed that settingshave already been established between the PC 11 and the access point 13such that the PC 11 can communicate with the access point 13 in theinfrastructure mode, whereas the printer 12 is in an initial state wheresettings for connection to the wireless LAN have not been establishedyet, and the ID for the infrastructure mode has not been set thereto.

The PC 11 operates on an OS (operating system), and a user needs toinstall printing software (printer driver) in the PC 11 in order tocarry out printing in this OS environment. Further, when the wirelessLAN is used for printing, the user has to set up the printer 12 for thewireless LAN to make the printer 12 connectible to the access point 13,and then install software for enabling printing through the wireless LANin the PC 11. In this case, the user needs to configure the settings ofthe software that enables printing by the wireless LAN, such that the PCis suitable for the printer.

For clarity of the outlines of the present embodiment, first, adescription will be given of installation of the printer driver.

To connect a printer, such as the printer 12, to a host computer, suchas the PC 11, and enable the printer to carry out printing, software isrequired which understands a printing instruction from a printingapplication installed in the host computer and sends a print controlcommand and print data based on the printing instruction to the printer,to thereby control the printer. This software for control of the printeris the aforementioned printer driver.

As typified by the printer driver, devices or apparatuses connected to ahost computer are controlled by control commands received fromapplications therefor via respective device drivers. Each device driveris not dedicated to a specific host application activated on anoperating system, and therefore insofar as a device is connected to thehost computer, the device driver therefor is resident in the hostcomputer, as a kind of resident program occupying a specific memory areaof the host computer.

Recent OSs, typified by Windows (registered trademark), have aplug-and-play function of automatically installing a proper devicedriver suitable for a device when the device is connected to a hostcomputer. In a plug-and-play process executed when a device is connectedto the host computer for the first time, if no optimal device driver isfound among standard device drivers provided by the OS, it is necessaryto install a device driver in the OS, which is provided at the time ofpurchase of the device in a state stored in a medium, such as a floppydisk or a CD-ROM. This operation of installing a device driver in an OSwill be referred to hereinafter as a device driver installationoperation.

In the following, a description will be given of a process forinstalling a device driver in a plug-and-play compatible OS.

One of the typical plug-and-play wire interfaces is the USB interface.The description will be given by taking, as an example, printer driverinstallation using the USB interface. FIG. 2 shows message screensdisplayed on a host computer, and FIG. 3 is a flowchart showing thesequence of the installation operation. The message screens and thesequence in FIGS. 2 and 3 illustrate only a case where the plug-and-playprocess was normally carried out. Of course, when the plug-and-playprocess has failed, an error sequence different from the above iscarried out.

First, the user connects the printer to the host computer by using theUSB interface as a plug-and-play interface. An OS operating on the hostcomputer detects that the device has been connected to the host computervia the USB interface (step S300 in FIG. 3). At this time, the OSdisplays a screen 21 in FIG. 2. If the user wants to install a printerdriver, he/she depresses a button 22, whereas if the user does not,he/she depresses a button 23.

Then, the OS reads from the printer a device descriptor as basicinformation of the USB device (i.e. printer) by a predetermined methoddefined by the USB standard (step S301). The device descriptor containsbasic function information of the device, including device classinformation indicative of the type of the device. The OS reads andanalyzes the device descriptor to thereby recognize that the deviceconnected thereto is one belonging to the printer class, i.e. a printer.If the device connected to the OS is a printer, the process proceeds toa step S303, whereas if the device connected to the OS is a device otherthan a printer, the process proceeds to a step S310. In the step S310,other processes associated with the device are carried out.

In general, a device driver for a printer is roughly comprised of twodrivers at respective different levels. One of them is a port driver asa lower-level driver that controls a protocol for use in datacommunication with the printer on each interface to which the printer isconnected, and the other is a high-level printer driver that operates ata higher level than the port driver and converts actual printapplication data to record data or a printer language suitable for thespecific type of the printer. Further, the high-level printer driveracquires status information indicative of the operating status of theprinter from the printer, and passes the status information to a printerstatus display application.

When having recognized that the device connected to the OS is a printer,the OS installs a suitable port driver to enable the port driver (stepS303). At this time, the OS displays a screen 24 in FIG. 2. If the userwants to cancel installation of the port driver, a button 25 isdepressed. Further, through control of the port driver, a port instanceas a logical connection for one-to-one data communication between aspecific device detected on an interface and the host computer isprovided. When the detected device is a USB printer, a port driver forUSB printing is installed, whereafter a port instance is generated as alogical communication path for communication between the printer and thehost computer (step S304).

When the port driver is loaded and enabled after initialization, the OSacquires a class descriptor as detailed information of the printerconnected thereto (step S305). In the case of the USB printer, a command(GET_CAPABILITIES) for reading a device ID defined by a USB printerclass standard is issued to the printer device via the port driver,whereby the class descriptor is acquired. The device ID sent back inresponse to the command contains information of a printer manufacturer,a model name, information of supported printer languages, and otherinformation specific to the printer model.

The OS acquires detailed information of the USB printer device connectedthereto, and searches for an optimal high-level printer driver based onthe detailed information (step S306). If the optimal high-level printerdriver is present within a standard retrieval range of the OS, thehigh-level printer driver found within the standard retrieval range isinstalled. On the other hand, if no suitable high-level printer driveris present within the standard retrieval range of the OS, a message orthe like inquiring of the user where the driver is stored is displayed.In this case, the user designates a medium, such as a floppy (registeredtrademark) disk or a CD-ROM, provided at the time of purchase of thedevice in a manner bundled with the device, or a device driverdownloaded from a manufacturer's file server via the Internet, wherebythe suitable high-level printer driver is installed in the OS (stepS307). During this installation, the high-level printer driver is copiedin a predetermined area (directory) on the host computer, according to apredetermined procedure.

Then, an entry associated with the device being currently installed isadded to a database provided in the OS as a standard component (stepS308). This database stores device-specific control setting parameters,information of driver/device configuration, port instance informationassociated with device instances, information of settings by the user,and so forth. In OSs, such as Windows 2000 (registered trademark) andWindows XP (registered trademark), this standard database is generallyreferred to as “the registry”, and therefore will also be referred to assuch in the following description. FIG. 4 shows an example of theregistry displayed in a manner recognizable to a user.

An entry is prepared for each device with which the OS communicates viaa port instance generated by the OS itself. More specifically, an entryis provided for each logical connection between the OS and a device, andport instance information corresponding to the logical connection isstored in the entry whereby the port instance and the entry areassociated with each other. For example, when a printer equipped with aplurality of connection interfaces is connected to a host computer viathe respective interfaces, port instances are prepared on aninterface-by-interface basis. Although a high-level printer driver usedin the same printer is common to a plurality of interfaces, an entryassociated with the high-level printer driver is prepared in theregistry on an interface-by-interface basis or on a logicalconnection-by-logical connection basis.

When preparation for starting the printer driver is completed, asdescribed above, a message indicative of completion of the installationof the printer driver is displayed on a screen 26 shown in FIG. 2 (stepS309).

On a printer list screen of an OS equipped with a GUI, a port instanceassociated with a printer is visually represented by a printer icon.FIG. 5 shows an example of this screen. More specifically, when aplurality of port instances are prepared in association with a specificprinter, for communication between the printer and a host computer via aplurality of interfaces, printer icons associated with the respectiveport instances are displayed. Information of the association between aprinter icon and the associated port instance is also described in anentry prepared on a port instance-by-port instance basis, so thatinformation of which port instance is visually represented by whichprinter icon is also managed.

The above description illustrates the device driver installation processin the plug-and-play compatible OS by taking the USB printer as anexample. Of course, in an OS of a different type, a device driver can beinstalled in a different manner, but in general, installation of aplug-and-play device is carried out in substantially the same sequenceas described above.

FIG. 6 shows examples of screens displayed in execution of a printerdriver installation process using the USB interface. These screens aredisplayed on the display of the PC 11 during installation of a printerdriver on the PC 11 for enabling the printer 12 in FIG. 1 to performprinting.

First, a screen 61 is displayed as an initial screen. The screen 61 is astart screen for the printer driver installation process, which isdisplayed when the user has activated a software program forinstallation. On the screen 61, there are provided selection icons 62and 63 for selection between “Execute” and “Cancel”. The selection icons62 and 63 can be selected with a mouse or the like. When the “Execute”icon 62 is selected, the installation is started, and the next screen 64is displayed. When the “Cancel” icon 63 is selected, the process iscanceled without executing installation of the printer driver.

On the screen 64, a message instructing the user to connect between thePC 11 and the USB interface of the printer 12 is displayed, and the userfollows the instruction and connects the USB cable 15 to the USBinterface of the printer 12. If the power of the printer 12 is off, theuser turns on the printer 12. Also on the screen 64, the installationcan be canceled by selecting a “Cancel” icon 65.

When the user connects the USB cable 15 to the printer 12 and turns onthe printer 12, the installation of the printer driver and internalsetting of the printer 12 are completed by the plug-and-play function.The installation of the printer driver by the plug-and-play function iscarried out, according to the procedure described with reference to FIG.3.

When the printer driver is successfully installed, a screen 66 isdisplayed so as to notify the user of completion of the installation,and the software program is terminated by the user selecting an “OK”icon 67. When the installation of the printer driver has failed for somereason or other, a screen 68 is displayed so as to notify the user ofthe failure of the installation. Similarly to the screen 68, thesoftware program is terminated by the user selecting an “OK” icon 69.

As described above, the printer driver installation using the USBinterface is completed by operation performed according to instructionsdisplayed in the sequence of the screens 61→64→66, which enablestransmission of print data via the USB interface.

FIG. 7 is a flowchart of the printer driver installation process of thepresent embodiment, which is executed by the PC 11 while displaying thescreens shown in FIG. 6.

First, the screen 61 shown in FIG. 6 is displayed (step S700). If the“Execute” icon 62 is selected on the screen 61, the process proceeds toa step S701, wherein a printer driver execution file is copied in asystem folder of the OS. More specifically, the OS sets in advance apredetermined area within the system folder for storing the printerdriver execution file and an information file, and the printer driverexecution file is copied in the predetermined area. As describedhereinbefore with reference to FIG. 3, the OS locates a suitable printerdriver in a storage area indicated by a predetermined information file.The file related to the printer driver is copied in the predeterminedarea so that the operation of locating the printer driver can beproperly performed.

Then, the screen 64 shown in FIG. 6 is displayed (step S702). Then, itis checked whether a predetermined time period has elapsed after thescreen 64 was displayed (step S703). If the predetermined time periodhas not elapsed, i.e. if a timeout has not occurred, it is checkedwhether a printer has been identified (step S704). This step is executedin order to check whether or not the printer 12 has been properlydetected by the plug-and-play function, and completion of installationof the printer driver is regarded as completion of identification of theprinter. Detailed description thereof was made hereinbefore withreference to FIG. 3.

If it is determined in the step S703 that a timeout has occurred, amessage indicative of the failure of the installation is displayed onthe screen 68 (step S707). If the printer 12 has been identified in thestep S704, the process proceeds to a step S705, wherein setting ofprinter information related to the installed printer driver isperformed. Then, in a step S706, the screen 66 is displayed to indicatethat the installation has been normally completed. In the step S706, thescreen 66 is displayed in place of the screen 26 in FIG. 2. When the“OK” icon 67 is selected on the screen 66, the printer driverinstallation process using the USB is completed.

Since the printer 12 of the present embodiment has both the USBinterface and the wireless LAN interface, an icon 70 for selecting“Network installation” is displayed on the screen 66, assuming that thesetup of a wireless LAN connection (i.e. wireless network installation)will be executed immediately after completion of the printer driverinstallation.

In the following, a description will be given of a wireless networkinstallation process in the case where the wireless network includes aplurality of access points and printers.

FIGS. 8A to 8C and FIGS. 9D and 9E are views showing examples of screensdisplayed in execution of the wireless network installation processusing the USB, according to the present embodiment. These screens aredisplayed on the display of the PC 11, for carrying out the setup of thewireless LAN connection immediately after completion of the printerdriver installation described with reference to FIGS. 6 and 7.

When the “OK” icon 67 is selected on the screen 66 in FIG. 8A, the setupof the wireless LAN connection is not executed, whereas when the“Network installation” icon 70 is selected, the wireless networkinstallation process is started, and first, an operating screen 84 (FIG.8B) is displayed for selecting an access point for connection to thesame.

On the screen 84, a list of access points to which the printer 12 can beconnected via the wireless LAN card 14 mounted in the printer 12 isdisplayed based on access point information sent from the printer 12 viathe USB cable 15 in response to an access point search command sent fromthe PC 11 to the printer 12 via the USB cable 15. When having receivedthe access point search command from the PC 11 via the USB cable 15, theprinter 12 searches for the access points using the wireless LAN card14.

In a display area 85 on the screen 84 is displayed a list of accesspoints detected by the printer 12 through the access point search. Thepresent example shows that three access points A, B, and C have beendetected by the printer 12. In the display area 85, access pointsoperating within the reach of radio waves are all displayed, andtherefore the access points displayed there are not limited to oneswhich the user uses. Therefore, by shifting a highlighted line withinthe display area 85, it is possible to select a desired access pointfrom a plurality of access points.

When a selected access point is an encrypted one, a decryption key fordecryption or crypt analysis can be entered in an input area 86 tothereby deal with the encrypted access point. In general, a wireless LANemploys an encryption technique for preventing tapping and leakage ofdata. One of the typical encryption techniques is WEP (Wired EquivalentPrivacy). WEP is an algorithm using identical cryptographic information,called a key, for both encryption and decryption, and by setting thiskey, data is concealed from the other devices. When the wireless LAN isused in an encrypted environment, it is necessary to set the sameencryption key to the printer 12 as well.

When a “Return” icon 87 is selected on the screen 84, the screen 84 isswitched to the previous screen 66, and when a “Next” icon 88 isselected, the screen 84 is switched to the next screen in a state wherean access point selected in the area 85 is designated. When a “Cancel”icon 89 is selected, the installation is canceled.

Thus, on the screen 84, the user can select and designate an accesspoint currently used by him/her, which makes it possible to preventerroneous connection to another access point in transmitting print datato the printer 12. When the user selects an access point on the screen84, the access point to be used is set to the printer 12, which enablesthe printer 12 to be recognized via the access point 13. The PC 11searches for a printer via the wireless LAN to check whether or not theprinter 12 has been properly connected.

On the next screen 810 (FIG. 8C) is displayed a list of printersdetected via the access point. The acquisition and display of this listof printers is performed by the PC 11 sending a printer search commandvia the access point 13 through the wireless LAN interface, and printershaving received the command responding back to the PC 11. Morespecifically, the search command is transmitted to all devices andapparatuses on the network by broadcast, and devices and apparatuses(specific printers and printer adapters in the present case) havingreceived the search command and capable of understanding the same sendpredetermined information in response to the command to the hostcomputer that transmitted the command. This information contains thename, ID, and address of each printer, and a printer to be connected tothe host computer is identified based on the information.

On the screen 810, the list of the detected printers is displayed in adisplay area 811. In the illustrated example, three printers have beendetected. Similarly to the case of selecting an access point, a printerhighlighted in the area 811 is selected. When a “Return” icon 812 isselected on the screen 810, the screen is switched back to the previousscreen 84, while when a “Cancel” icon 814 is selected, the installationis canceled.

Further, when a “Next” icon 813 is selected on the screen 810, theprinter selected in the display area 811 is determined as a connectionpartner, and then a screen 815 (FIG. 9D) for use in entering a port nameis displayed. An input area 816 on the screen 815 is for entering adesired port name. A port name is used to identify each printer when aplurality of printers connected to a single PC have the same function(e.g. wireless LAN), and an initial value to be set by default isWLAN01. “WLAN” is an identifier indicative of a printer on the wirelessLAN, and “01” represents a last number (also “first” in the presentcase) registered in the system, which is added to the identifier as aserial number, so as to enable printers having the same function to bedistinguishably handled. The printer driver identifies a printer by theport name.

When a “Return” icon 817 is selected on the screen 815, the screen isswitched back to the previous screen 810, while when a “Cancel” icon 819is selected, the installation is canceled. Further, when a “Next” icon818 is selected, the name entered in the input area 816 is determined asa port name, and then, a screen 820 (FIG. 9E) is displayed to indicatethat the network installation has been completed.

On the screen 820, there are displayed two radio buttons 821 and 822.When only an icon for a wireless LAN printer is to be prepared, the userselects the radio button 821, while when icons for both a wireless LANprinter and a USB printer are to be prepared, the user selects the radiobutton 822. When the user selects an “OK” icon 823 after having selectedthe radio button 821, a printer icon shown in FIG. 10 is prepared, forexample. On the other hand, when the user selects the “OK” icon 823after having selected the radio button 822, printer icons shown in FIG.11 are prepared, for example. The user utilizes the printer icons tocheck registered printers, discriminate between them, or identify acurrently available printer. One of these icons is selected for printingcarried out in response to a print instruction from the printapplication. For example, when a “BJOOOUSB001” icon is selected on thescreen in FIG. 11, print data is transmitted via the USB cable 15. Onthe other hand, when a “BJOOO (copy 2) WLAN01” icon is selected, printdata is transmitted via the wireless LAN.

Generation of a printer icon immediately after completion of thewireless network installation can be achieved by a method in which aprinter icon representative of a USB port instance is deleted, and thena printer icon corresponding to a generated wireless LAN port instanceis newly prepared, a method in which settings of a printer iconrepresentative of a USB port instance are changed to thereby assign awireless LAN port instance thereto, or some other methods. In any case,information of the prepared printer icon is written in the entryprovided in the registry of the OS in association with the wireless LANport instance, as described hereinbefore with reference to FIG. 3, andicon information in the entry related to the USB port instance isdeleted, or information indicative of disuse thereof is written in theentry. Further, depending on the installation procedure, there is a casewhere the entry related to the USB port instance is deleted, or the USBport instance itself contained therein is deleted.

When the user selects preparation of both the wireless LAN port instanceand the USB-cable port instance, the printer icon representative of theUSB port instance already generated in the setup process is preservedwithout being deleted or changed. In this state, a wireless LAN portinstance and a printer icon representative of the same are newlyprepared in the printer icon generation process executed immediatelyafter completion of the wireless network installation (refer to thescreen in FIG. 11). Also in this case, as described with reference toFIG. 3, information of the newly prepared printer icon is written in theentry provided in the registry of the OS in association with thewireless LAN port instance.

Thus, according to the method described above, when only the setup ofthe wireless LAN port is selected in accordance with selection of theradio button 821 by the user, only a printer icon representative of awireless LAN port instance is prepared, while when the setup of both thewireless LAN port and the USB port is selected in accordance withselection of the radio button 822 by the user, two printer iconsrepresentative of the wireless LAN port instance and the USB portinstance are prepared.

In the following, a description will be given of a wireless networkinstallation process executed in the case where only a single accesspoint and a single printer are detected.

FIG. 12 shows a second sequence of screens displayed during execution ofanother wireless network installation process using the USB interface,according to the present embodiment. These screens are displayed on thedisplay of the PC 11 in place of the screens shown in FIGS. 8A to 8C, 9Eand 9D, when only a single access point and a single printer aredetected through the access point search and the printer search in thewireless network installation process using the USB interface.

In the present sequence of screens, the screens 84, 810 and 815 areomitted from the screens described with reference to FIGS. 8A to 8C, 9Dand 9E, and only the screen 66 and a screen 94 corresponding to thescreen 820 in FIG. 9E are displayed. In the environment where the singleaccess point and the single printer are present and in the case where aport name may be automatically generated, the user gives only twoinstructions, i.e. selecting the “Network installation” icon 70 on thescreen 66 and an “OK” icon 97 on the completion screen 94, whereby thesetup of the wireless network connection is completed.

FIG. 13 is a flowchart showing another process executed by the PC 11,i.e. the other wireless network installation process according to thepresent embodiment, in which are displayed the screens shown in FIGS. 8Ato 8C, 9D, 9E and 12.

First, it is determined in a step S900 whether or not the “Networkinstallation” icon 70 has been selected on the screen in FIG. 8A. If theicon 70 has been selected, the process proceeds to a step S1000, whereinthe access point search command is transmitted to the printer 12 via theUSB cable 15. The printer 12 searches for an access point, and sendsinformation of the detected access point to the PC 11 via the USB cable15.

As USB commands for wireless network installation, which the PC 11 sendsto the printer 12 via the USB cable 15, there are provided threecommands, i.e. the access point search command, an informationacquisition command, and an information setting command.

When the access point search command is sent to the printer 12, theprinter 12 configures a wireless LAN module thereof, such as thewireless LAN card 14, so as to use the wireless LAN module for accesspoint search. The wireless LAN module of the printer 12 configured foraccess point search transmits a signal for access point search. Anaccess point having received this signal sends access point information(an ID, radio wave conditions, an address, a channel, etc.) of theaccess point itself to the wireless LAN module that has transmitted thesearch signal. The wireless LAN module of the printer 12 receives theinformation sent from the access point, and the printer 12 sends thereceived information to the PC 11 using the USB interface. At this time,the printer sends back information of all detected access points to thePC 11.

In the next step S1001, it is checked, based on the access pointinformation sent from the printer 12, how many access points have beenfound. If more than one access point have been found, the processproceeds to a step S1002, wherein the access point list screen 84 isdisplayed so as to allow the user to select a desired access point. Ifonly one access point has been found, the process skips over the stepS1002 to a step S1003.

In the step S1003, the setup of an access point for wireless LANconnection is carried out. This setup is performed by sending theinformation setting command for designating the access point which hasbeen selected by the user based on the information of the access pointsdetected in the step S1000 or the only one detected access point, to theprinter 12 via the USB cable 15. When an address, an encryption key, andother pieces of information of the access point, which are necessary forutilization of the access point, are set by the information settingcommand, the printer 12 can be connected to the specific access point.

In the next step S1004, printer search is carried out using a networkcommand. As network commands, there are provided two networkinstallation commands, i.e. a broadcast printer search command and anaddressed printer search command. In the broadcast printer searchcommand, no recipient is designated, whereas in the addressed printersearch command, a specific recipient is designated.

In the illustrated example, the PC 11 transmits the broadcast printersearch command. This command is transmitted onto the wireless LAN, and aprinter having received the command through the wireless LAN sendsprinter information (an ID, a printer name, an address, a model name,etc.) to the PC 11 that has transmitted the command, via the wirelessLAN. Thus, connection between the PC 11 and the printer can be confirmedvia the wireless LAN. Since this command is transmitted by broadcast,printers capable of understanding the command can all respond to the PCthat has transmitted the command. Therefore, the PC 11 needs to select aprinter model to be installed, based on information sent from theprinters.

The PC 11 checks, based on the information sent from the printers,whether only one printer has been found connectible (step S1005). Ifmore than one printer have been found connectible, the process proceedsto a step S1006, wherein a printer list is displayed on the screen 810so as to allow the user to select a desired printer. If only one printerhas been found connectible, the process skips over the step S1006 to astep S1007.

In the step S1007, whether or not it is necessary to display a port nameis checked. If it is necessary to display a port name, the processproceeds to a step S1008, wherein the screen 815 is displayed for portname entry so as to allow the user to enter a port name. If it isunnecessary to enter a port name, the process skips over the step S1008to a step S1009. Whether to allow the user to enter a port name may bedetermined depending on the necessity, and therefore the step ofentering a port name can be omitted when it is required to achieveinstallation with a reduced number of simple screens.

In the step S1009, the PC 11 performs the setup of network informationand registration of a wireless LAN port instance within the PC 11itself, whereby the PC 11 becomes capable of transmitting print data tothe printer 12 via the wireless LAN interface. Network informationcontains the address and name of a printer, which is necessary forprinting. In the next step S1010, the network installation completionscreen shown in FIG. 9E is displayed.

USB commands sent to printers via the USB cable 15 include not only thecommands for installation, but also a command for sending print data,and commands for various kinds of configurations of printers, but onlythe installation commands directly related to the present invention arereferred to in the present embodiment. One of the installation commandsis the access point search command described with reference to the stepS1000 in FIG. 13. A second one is the information acquisition commandwhich is used for acquiring information concerning a wireless LAN set toa printer, from the printer. A third one is the information settingcommand. This is a command for setting information of the wireless LAN(e.g. the address of an access point, a mode, a channel, etc.), and thiscommand is used for designating an access point in the step S1003 inFIG. 13.

In the present embodiment, as described hereinbefore, as networkcommands used for installation, there are provided the two networkinstallation commands, i.e. the broadcast printer search command thatall printers can receive, and the addressed printer search command thata specific printer receives. Network commands include not only theabove-mentioned commands, but also a command for sending print data, andcommands for various kinds of configurations of printers, but only theinstallation commands directly related to the present invention arereferred to in the present embodiment.

By using the installation commands, it is possible to determine whethera printer on the network has been properly detected and whether it isproperly set up for use, i.e. the connection between the PC 11 and theprinter via the wireless LAN can be confirmed. These commands areforwarded and returned using a general network protocol, such as TCP/IPor UDP.

In the following, a description will be given of a network installationprocess executed by a second PC.

FIG. 14 shows examples of screens displayed during the wireless networkinstallation process executed by the second PC.

To carry out a printer driver installation process and a wirelessnetwork installation process by the second PC (in which neither aprinter driver nor a wireless LAN device has been installed) after thesetup of the printer for wireless LAN connection has been completed byexecution of the printer driver installation process and the wirelessnetwork installation process in the first PC as described with referenceto FIGS. 6 to 13, only the setup on the PC side is performed because thesetup of the printer for wireless LAN connection has already beencompleted.

The printer driver installation process in the second PC is identical tothe installation process described with reference to FIGS. 6 and 7, andtherefore description thereof is omitted. When a screen 131 is displayedafter completion of the printer driver installation process, and networkinstallation is to be performed, a “Network installation” icon 133 isselected. Then, if the network installation is normally completed, anetwork installation completion screen 134 identical to the screen 94 isdisplayed, whereas when no connected printer is detected on the wirelessLAN for some reason or other, a network installation failure screen 137is displayed.

FIGS. 15 and 16 are a flowchart showing a process executed by the PC forthe wireless network installation described with reference to FIG. 14.This flowchart includes not only the setup of the wireless LANconnection and the printer to be performed by the first PC, but also thesetup of the same to be performed by the second and subsequent PCs.

First, in a step S1400, setting information of the printer 12 isacquired. In this step, the information acquisition command is sent fromthe PC to the printer 12 via the USB cable, and the printer 12 sendsinformation already set thereto via the USB cable. The information setto the printer 12 contains information related to the wireless LAN, andthe information related to the wireless LAN contains informationindicative of whether or not an access point is set.

The access point setting information is the information set in thenetwork installation process executed on the first PC immediately afterthe printer driver installation (refer to the step S1003 in FIG. 13).When an access point has already been set, it is unnecessary to set anaccess point anew, and the information already set is used.

In a step S1401, it is checked, based on the information from theprinter 12, whether or not an access point has already been set. If anaccess point has not been set yet, this means that the present PC is afirst PC. In this case, it is necessary to start with the access pointsetup, and therefore it is necessary to execute the process describedwith reference to FIGS. 8A to 8C, 9D, 9E and 10.

Steps S1402 to S1412 are identical to the steps S1000 to S1010 in FIG.13, and therefore detailed description thereof is omitted. In the stepsS1402 to S1412, the setup of the access point of the printer 12 and thesetup of the network on the PC side are performed.

If it is determined in the step S1401 that an access point has alreadybeen set, the process proceeds to a step S1413 in FIG. 16, wherein aspecific printer search process is executed. The information acquiredfrom the printer in the step S1400 contains the address and ID of theprinter already set, so that an addressed printer search command basedon the information is transmitted to the wireless LAN. Since the setupfor communication between the second PC and the access point has alreadybeen completed, the second PC is allowed to issue commands to thewireless LAN. The addressed printer search command is a search commandin which an address is specified, and therefore the command can be sentonly to a printer currently connected to the PC by the USB cable.

When the command reaches the printer, the printer sends printerinformation back to the PC that has transmitted the command, via thewireless LAN. On the PC side, it is checked whether a response hasarrived from a printer, and whether the response having arrived is valid(step S1414). In this case, the information sent from the printer viathe wireless LAN and the information acquired via the USB cable arecompared with each other, and if they are found identical, it is judgedthat a desired printer has been properly detected. Thus, the connectionbetween the PC and the printer can be confirmed via the wireless LAN.

If no printer responds to the command from the PC for some reason orother, or if the information received via the wireless LAN and theinformation received via the USB cable are not identical, the processproceeds to a step S1419, wherein the screen 137 is displayed. When aprinter is properly detected in the step S1414, the process proceeds toa step S1415. Steps S1415 to S1418 are identical to the steps S1409 toS1412, and therefore description thereof is omitted. Execution of thesteps S1415 to S1418 completes the wireless LAN installation in thesecond PC, which enables printing via the wireless LAN.

The present embodiment provides the following advantageous effects:

(1) Wireless LAN network installation is performed immediately aftercompletion of printer driver installation executed using a USBinterface, utilizing the printer driver installation executed using theUSB interface, which makes it possible to simplify the procedure of thewireless LAN installation.

(2) Connection to a printer via the wireless LAN is actually checked,and the installation of the printer driver is completed only when theconnection via the wireless LAN has been properly established. Thismakes it possible to avoid the inconvenience that the installation isterminated despite the fact that the connection via the wireless LAN hasactually failed.

(3) The setup of each of second and subsequent PCs relating to thewireless LAN, which conventionally required a user to carry out acomplicated operation, can be performed more easily, using the USBinterface as in the case of the first PC. In short, the second PC canperform the setup of wireless LAN connection in the same procedure as inthe first PC. This makes it possible to unify user operations, therebysuppressing the possibility of an erroneous operation in the setup ofthe wireless LAN connection.

In the above described embodiment, the user selectively depresses anyone of the radio buttons on the network installation completion screen(the screen 820 FIG. 9E, the screen 94 in FIG. 12, and the screen 134 inFIG. 14), to thereby select a printer icon (or printer icons) to begenerated upon completion of the installation, to thereby generate ordelete a printer icon according to the user's selection, but theselection of a printer icon may be performed in different timing.

For example, in an example shown in FIG. 17, radio buttons 175 and 176for use in selecting a printer icon (or printer icons) to be generatedupon completion of the installation are displayed at the start ofnetwork setup in execution of the wireless network installation process,allowing a user to select one of the radio buttons 175 and 176. Afterselection by the user, the network installation process is executed, anda completion screen 178 is displayed upon completion of the networkinstallation.

Similarly, deletion of an icon representative of a USB port can becarried out when the USB port has become unnecessary for installation,without awaiting completion of the installation.

The above-described control method can be achieved by storing programsfor implementing the flowcharts described hereinabove with reference toFIGS. 3, 7, 13, 15 and 16, in a storage device within a host apparatus,such as the PC 11, and operating the programs.

The present invention is not limited to the apparatus according to theabove described embodiment, but it may either be applied to a systemcomposed of a plurality of apparatuses or to a single apparatus.

It is to be understood that the object of the present invention may alsobe accomplished by supplying a system or an apparatus with a storagemedium in which a program code of software which realizes the functionsof the above described embodiment is stored, and causing a computer (orCPU or MPU) of the system or apparatus to read out and execute theprogram code stored in the storage medium.

In this case, the program code itself read from the storage mediumrealizes the functions of the above-described embodiment, and hence theprogram code and the storage medium in which the program code is storedconstitute the present invention.

Further, it is to be understood that the functions of the abovedescribed embodiment may be accomplished not only by executing a programcode read out by a computer, but also by causing an OS (operatingsystem) or the like which operates on the computer to perform a part orall of the actual operations based on instructions of the program code.

Further, it is to be understood that the functions of the abovedescribed embodiment may be accomplished by writing a program code readout from the storage medium into a memory provided on an expansion boardinserted into a computer or in an expansion unit connected to thecomputer and then causing a CPU or the like provided in the expansionboard or the expansion unit to perform a part or all of the actualoperations based on instructions of the program code.

Further, the above program has only to realize the functions of theabove described embodiment on a computer, and the form of the programmay be an object code, a program code executed by an interpreter, orscript data supplied to an OS.

Examples of the storage medium for supplying the program code include afloppy (registered trademark) disk, a hard disk, an optical disk, amagnetic-optical disk, a CD-ROM, a CD-R, a CD-RW, a DVD-ROM, a DVD-RAM,a DVD-RW, or a DVD+RW, a magnetic tape, a nonvolatile memory card, and aROM. Alternatively, the program may be downloaded via a network fromanother computer, a database or the like, not shown, connected to theInternet, a commercial network, a local area network, or the like.

1. An information processing apparatus communicable with at least oneexternal device or external apparatus having a wire interface and awireless interface, comprising: a first setting-executing device thatexecutes a first setting for enabling the information processingapparatus to communicate with the external device or external apparatusvia the wire interface; a second setting-executing device thatcommunicates with the external device or external apparatus via the wireinterface after execution of the first setting, to execute a secondsetting for enabling the information processing apparatus to communicatewith the external device or external apparatus via the wirelessinterface; a determination device that determines whether execution ofthe first setting has succeeded; and a prompting device that prompts,when said determination device determines that execution of the firstsetting has succeeded, a user to confirm whether the second setting isto be executed, wherein said second setting-executing device starts thesecond setting in response to confirmation by the user that the secondsetting is to be executed.
 2. An information processing apparatus asclaimed in claim 1, wherein said second setting-executing devicecomprises a connection checking device that checks, via the wirelessinterface, whether or not connection of the information processingapparatus to the external device or external apparatus has beenestablished during execution of the second setting.
 3. An informationprocessing apparatus as claimed in claim 1, wherein said secondsetting-executing device acquires setting information required toexecute the second setting, via the wire interface.
 4. An informationprocessing apparatus as claimed in claim 1, wherein said secondsetting-executing device transmits a command for setting informationrequired to execute the second setting, via the wire interface.
 5. Aninformation processing apparatus as claimed in claim 1, furthercomprising a generation device that is responsive to an instruction froma user, for generating at least one of an icon corresponding to thefirst setting or an icon corresponding to the second setting.
 6. Aninformation processing apparatus as claimed in claim 1, furthercomprising a deletion device that deletes information set by the firstsetting.
 7. An information processing apparatus as claimed in claim 1,wherein said first setting-executing device installs a device driver asa software for enabling the information processing apparatus to controlthe external device or external apparatus via the wire interface.
 8. Acomputer-readable medium storing a computer program for controlling aninformation processing apparatus communicable with at least one externaldevice or external apparatus having a wire interface and a wirelessinterface, the computer program comprising: a first setting-executingmodule for executing a first setting for enabling the informationprocessing apparatus to communicate with the external device or externalapparatus via the wire interface; a second setting-executing module forcommunicating with the external device or external apparatus via thewire interface after execution of the first setting, to execute a secondsetting for enabling the information processing apparatus to communicatewith the external device or external apparatus via the wirelessinterface; a determination module for determining whether execution ofthe first setting has succeeded; and a prompting module for prompting,when said determination module determines that execution of the firstsetting has succeeded, a user to confirm whether the second setting isto be executed, wherein said second setting-executing module starts thesecond setting in response to confirmation by the user that the secondsetting is to be executed.
 9. A method of controlling an informationprocessing apparatus communicable with at least one external device orexternal apparatus having a wire interface and a wireless interface,comprising the steps of: executing a first setting for enabling theinformation processing apparatus to communicate with the external deviceor external apparatus via the wire interface; communicating with theexternal device or external apparatus via the wire interface afterexecution of the first setting, to execute a second setting for enablingthe information processing apparatus to communicate with the externaldevice or external apparatus via the wireless interface; determiningwhether execution of the first setting has succeeded; prompting, whenthe determining step determines that execution of the first setting hassucceeded, a user to confirm whether the second setting is to beexecuted; and executing the second setting in response to confirmationby the user that the second setting is to be executed.
 10. A method asclaimed in claim 9, wherein a device driver as software for enabling theinformation processing apparatus to control the external device orexternal apparatus via the wire interface is installed in the step ofexecuting the first setting.